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https://github.com/albfan/miraclecast

Connect external monitors to your system via Wifi-Display specification also known as Miracast
https://github.com/albfan/miraclecast

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Connect external monitors to your system via Wifi-Display specification also known as Miracast

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# MiracleCast - Wifi-Display/Miracast Implementation



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The MiracleCast project provides software to connect external monitors to your system via Wi-Fi. It is compatible to the Wifi-Display specification also known as Miracast. MiracleCast implements the Display-Source as well as Display-Sink side.



The Display-Source side allows you to connect external displays to your system and stream local content to the device. A lot of effort is put into making this as easy as connecting external displays via HDMI. *Note: This is not implemented yet. Please see [#4](../../issues/4).*



On the other hand, the Display-Sink side allows you to create wifi-capable external displays yourself. You can use it on your embedded devices or even on full desktops to allow other systems to use your device as external display.



## Requirements



The MiracleCast projects requires the following software to be installed:

 - **systemd**: A system management daemon. It is used for device-management (udev), dbus management (sd-bus) and service management.

    Systemd >= 221 will work out of the box. For earlier versions systemd must be compiled with --enable-kdbus, even though kdbus isn't used, but only the independent, experimental sd-libraries.

    *required*: >=systemd-213



 - **glib**: A utility library. Used by the current DHCP implementation. Will be removed once sd-dns gains DHCP-server capabilities.

    *required*: ~=glib2-2.38 (might work with older releases, untested..)



 - **gstreamer**: MiracleCast rely on gstreamer to show cast its output. You can test if all needed is installed launching [res/test-viewer.sh](https://github.com/albfan/miraclecast/blob/master/res/test-viewer.sh)



 - **wpa_supplicant**: MiracleCast spawns wpa_supplicant with a custom config.



 - **P2P Wi-Fi device** Although widespread these days, there are some devices not compatible with [Wi-Fi Direct](http://en.wikipedia.org/wiki/Wi-Fi_Direct) (prior know as Wi-Fi P2P). Test yours with [res/test-hardware-capabilities.sh](https://github.com/albfan/miraclecast/blob/master/res/test-hardware-capabilities.sh)



 - **check**: Test-suite for C programs. Used for optional tests of the MiracleCast code base.

    *optional*: ~=check-0.9.11 (might work with older releases, untested..)



 - copy the dbus policy **res/org.freedesktop.miracle.conf** to `/etc/dbus-1/system.d/`



## Build and install



To compile MiracleCast, you can choose from:



 - [autotools](http://en.wikipedia.org/wiki/GNU_build_system)

 - [cmake](http://en.wikipedia.org/wiki/CMake)

 - [meson](http://mesonbuild.com/)



See more info on wiki [Building](https://github.com/albfan/miraclecast/wiki/Building)



## Automatic interface selection with udev



If you want to select the interface to start miraclecast with, add a udev rule with the script [res/write-udev-rule.sh](https://github.com/albfan/miraclecast/blob/master/res/write-udev-rule.sh) and configure miraclecast with



    $ ../configure --enable-rely-udev



You can also choose the interface with  `--interface` option for miracle-wifid.



## Linux Flavours and general compilation instructions



### Ubuntu



Check your systemd version with:



    $ systemctl --version

    

If you are on 221 or above your systemd has kdbus enabled.

 

If you are below 221, an alternative repo was created to install systemd with dbus



https://github.com/albfan/systemd-ubuntu-with-dbus



See there was interface changes on systemd 219, if you are below that version, use branch [systemd-219](https://github.com/albfan/miraclecast/tree/systemd-219) to compile miraclecast



> See specific instructions on that repo



### Arch linux



Use existing [AUR package](https://aur.archlinux.org/packages/miraclecast-git/). Remember to enable kdbus to systemd-git dependency if you are below 221 systemd.



    $ export _systemd_git_kdbus=--enable-kdbus



You can achieve installation using [yaourt](https://wiki.archlinux.org/index.php/Yaourt)



### Other flavours



If you feel confidence enough (since systemd is the entrypoint for an OS) extract instructions from arch linux AUR PKGBUILD:



- [systemd-kdbus](https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=systemd-kdbus)

- [miraclecast](https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=miraclecast)



## Documentation



### Steps to use it as sink



 1. shutdown wpa_supplicant and NetworkManager



        $ systemctl stop NetworkManager.service

        $ systemctl stop wpa_supplicant.service 



 2. launch wifi daemon



        $ sudo miracle-wifid &



 3. launch sink control (your network card will be detected. here 3)



        $ sudo miracle-sinkctl

        [ADD]  Link: 3



 4. run WiFi Display on link: 



        > run 3



 5. Pair your machine with other miracast device (mirroring)



 6. See your screen device on this machine



### Steps to use it as peer



 1. Repeat steps 1 and 2 from "use as sink"



 2. launch wifi control



        $ sudo miracle-wifictl



 3. Enable visibility for other devices



 4. Locate them using scanning



        > p2p-scan



 5. Apart from list, or show info with peer <mac> there's nothing useful here by now. For a Q&D see [Using as peer](https://github.com/albfan/miraclecast/issues/4)



## UIBC



> The User Input Back Channel (UIBC) is an optional WFD feature that when implemented facilitates communication of user inputs to a User Interface, present at the WFD Sink, to the WFD Source.



To use it just add `--uibc` on `miracle-sinkctl` startup. Single mouse events and key events are implemented.



## Autocompletion



 Source [res/miraclecast-completion](https://github.com/albfan/miraclecast/blob/master/res/miraclecast-completion) for autocompletion



## License



This software is licensed under the terms of the GNU-LGPL license. Please see ./COPYING for further information.



## Credits



This software is originally maintained by: David Herrmann [email protected] 



This fork is maintained by: Alberto Fanjul [email protected]



If you have any questions, do not hesitate to contact one of the maintainers.



## Additional urls



- Website: http://www.freedesktop.org/wiki/Software/miracle

- Original repo: git://people.freedesktop.org/~dvdhrm/miracle

- Fork repo: https://github.com/albfan/miraclecast

- Technical spec: https://www.wi-fi.org/file/wi-fi-display-technical-specification-v11 (free registration required)